<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>

<div id="app">

    <todo>
        <todo-title slot="todo-title" :title="title"></todo-title>
        <todo-items slot="todo-items" v-for="(item,index) in todoItems" :item="item"
                    v-bind:index="index" v-on:remove="removerItems(index)" :key="index"></todo-items>
    </todo>

</div>

<!-- 引入 Vue.js -->
<script src="https://unpkg.com/vue@2.5.21/dist/vue.min.js"></script>
<script>

    // slot: 插槽
    Vue.component("todo", {
        template: '<div>\
                         <slot name="todo-title"></slot> \
                         <ul> \
                            <slot name="todo-items"></slot> \
                         </ul>\
                    </div>'
    });

    Vue.component("todo-title", {
        props:['title'],
        template: '<div> {{title}} </div>'
    });
    Vue.component("todo-items", {
        props:['item','index'],
        // 只能绑定当前组件的方法
        template: '<li>{{ index }} ---- {{item}} <button @click="remove">删除</button></li> ',
        methods: {
            remove: function(index){
                // 自定义事件
                this.$emit('remove',index);
            }
        }
    });

    var vm = new Vue({
        el: "#app",
        data: {
            title: "nexora",
            todoItems: ["java", "python", "linux"]
        },
        methods: {
            removerItems: function(index){
                // alert(123124);
                console.log("删除了"+ this.todoItems[index] + "ok");
                this.todoItems.splice(index,1); // 一次只删除一个元素
            }
        }

    })
</script>

</body>
</html>